Phanteks Enthoo Primo: Giant Tower Case

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Phanteks Enthoo Primo: Giant Tower Case

November 11, 2013 by Lawrence Lee

Phanteks Enthoo Primo
Extended ATX Tower Case
Street Price

SPCR readers know Phanteks primarily for CPU coolers and fans, and now they enter the PC case market with the oddly named Enthoo Primo. It takes guts to expand into a saturated market and serious cojones to do in this fashion. Rather than dipping their toe in the water, they've jumped in full cannonball style. Not only is the Primo an expensive high-end offering, its size is gargantuan.

The Enthoo Primo box.

The Enthoo Primo.

At almost 10 inches wide, close to 28.5 inches tall, and 26.5 inches deep, a total volume of nearly 98 liters, it's substantially larger than most tower cases currently available. In fact, we've reviewed only two case that are bigger, the SilverStone Raven RV01, and the Cooler Master Cosmos II. The Primo isn't as gaudy, however; the aesthetic design is definitely understated. A similar case coming from a typical manufacturer might have laser beams, metal spikes, or a fish tank compartment for all we know. There is an odd structure on the right side that sits lower than the rest of the chassis and sticks outward like an expansion that was added after the fact. It either gives the case character or ruins the symmetry depending on how you look at it. The black finish of the case is, of course, a fingerprint magnet, and it's especially noticeable on the brush aluminum front bezel.

Specifications: Phanteks Enthoo Primo
(from the product web page)
Case Specifications
Dimension 25 x 65 x 60cm (WxHxD), 97.5 litres
Form Factor Full Tower Chassis
Material(s) Aluminum Faceplates, Steel Chassis
Motherboard Support ATX, EATX, mATX, SSI EEB
Front I/O 2x USB 3.0, 2x USB 2.0, Mic, Headphone, LED Switch, Reset Switch
Side Window Yes, split-window design
Expansion & Drive Bays
Expansion slots 8
Power Supply Slots 2
External 5.25" 5
Internal 3.5" 6 (2x 3 HDD cages)
Internal 2.5" 12 (2x 3 HDD cages + 2x doublestack SSD brackets) *expandable to 3x
Cooling 120mm fan 140mm fan
Front 2x 2x (2x included with LED)
Top 4x 3x (1x included)
Side 2x 2x
Rear 2x 1x (1x included)
Bottom 4x 2x (1x included)
HDD 2x -
Liquid Cooling 120mm radiator 140mm radiator
Front Up to 240 -
Top Up to 480 Up to 420
Side (w/o HDD cages) Up to 240 -
Rear 120 140
Bottom Up to 480 Up to 280
Graphics card 257mm (reservoir bracket installed)
277mm (reservoir bracket installed w/o cover)
350mm (no reservoir bracket)
390mm (HDD cages in front position)
515mm (no HDD cages)
CPU cooler 207mm
Cable Management 30mm
PH-F140SP (included fans)
Speed (rpm) 1200±250 rpm
Max Airflow 82.1 CFM
Static Pressure 1.33mm H2O
Acoustical Noise 19 dB
Packaging Information
Package Dimension
320mm x 725mm x 705mm (WxHxD)
Net Weight
17.9 kg
Gross Weight
20 kg
Length 5 Years Limited

The Enthoo Primo's measurements conform to a design that focuses heavily on water cooling versatility. Inside the aluminum/steel enclosure are a ridiculous number of large fan/radiator placements, one on every side with sufficient space, except for the windowed left side panel. There are also a couple of different spots for installing reservoirs, as well as a dedicated pump bracket. Almost everything else you can image in an enthusiast case is on tap as well. If you like having plenty of fan options, the Primo offers 16 different placements. Five 140 mm fans are included, all hooked up to a PWM controller that can power up to 8 fans out of the box (11 total if you can get your hands on a few 3-pin fan splitters). The case has blue light strips on the sidecar, running along the top and front and they can be turned off/on, along with the front fans' LEDs, with a single button. The obligatory removable drive cages and dust filters are present as well. There's even a spot for a second power supply if you're so inclined.


A first rate case ships with first rate accessories. Included are a full color assembly guide, a dual fan radiator bracket for the right side panel, zip-ties and velcro strips for tying up cables, a couple of dampening pads for a second power supply, and a neat plastic box housing all the screws you'll need in separated compartments.

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